Humphrey, who vehemently opposed Trump in last year’s election, said the president’s comments threatening North Korea with “fire and fury” show that he is “impaired by a seriously sick psyche” and could lead the nation into nuclear war.

Humphrey said the president’s “sick and reckless conduct could consume the lives of millions,” and he should be relieved of his duties “at the earliest possible date”

His letter calls on lawmakers to support legislation in the House, HR 1987, which would create a commission to invoke the 25th Amendment and “carry out a medical examination of the President to determine whether the President is mentally or physically unable to discharge the powers and duties of the office.”

Humphrey is already receiving pushback.

Neither of the state’s two House representatives ― Annie Kuster and Carol Shea-Porter, both Democrats ― support the commission out of concern it would set a dangerous precedent, spokespeople said.

“The congresswoman agrees with Senator Humphrey that the Trump presidency has veered far off the rails,” a spokeswoman for Shea-Porter told the Union Leader. “However, she believes creating a commission to pass judgment on the President’s mental health sets a potentially anti-democratic precedent.”